J/AJ/127/2455ivo://CDS.VizieR/J/AJ/127/2455doi:10.26093/cds/vizier.51272455CDSAbraham R.G.Glazebrook K.Mccarthy P.J.Crampton D.Murowinski R.,Jorgensen I.Roth K.Hook I.M.Savaglio S.Chen H.-W.Marzke R.O.,Carlberg R.G.2023-04-06T16:51:03Z2005-11-05T23:08:26ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesphotometryredshiftedinfrared-photometryThe Gemini Deep Deep Survey (GDDS) is an ultradeep (K<20.6mag, I<24.5mag) redshift survey targeting galaxies in the "redshift desert" between z=1 and z=2. The primary goal of the survey is to constrain the space density at high redshift of evolved high-mass galaxies. We obtained 309 spectra in four widely separated 30-arcmin^2^ fields using the Gemini North telescope and the Gemini Multi-Object Spectrograph (GMOS). The spectra define a one-in-two sparse sample of the reddest and most luminous galaxies near the I-K versus I color-magnitude track mapped out by passively evolving galaxies in the redshift interval 0.8<z<1.8. This sample is augmented by a one-in-seven sparse sample of the remaining high-redshift galaxy population. The GMOS spectrograph was operating in a nod-and-shuffle mode, which enabled us to remove sky contamination with high precision, even for typical exposures times of 20-30hr per field. The resulting spectra are the deepest ever obtained. In this paper we present our sample of 309 spectra, along with redshifts, identifications of spectral features, and photometry. This makes the GDDS the largest and most complete infrared-selected survey probing the redshift desert. The seven-band (VRIz'JHK_s_) photometry is taken from the Las Campanas Infrared Survey (Cat. <VII/228>).2004AJ....127.2455Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/2455CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/228 : Las Campanas Infrared Survey (Chen+, 2001-2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/2455https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/2455http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/2455https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/2455https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/2455http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/2455GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/2455/table4 (Master data table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/2455/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/2455/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/2455/table4?GETtext/xml+votable180.050000true32.4562917-4.67346940.0055555555555555566/17703 19033 19036 25540 31386https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/2455?format=asciiOpticalInfrareddefaultJ/AJ/127/2455/table4Master data tablez? RedshiftfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGDDSGDDS object identification (HH-NNNN)charprimarySpindicates that additional spectral features are descrobed in table5charRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainConfRedshift confidence (G1)intOvlapSlit geometry/collision class (1)charWeightSampling weight (2)doubleBmag? B-band magnitude (3)magfloatnullablen_Bmag[s] s for 2{sigma} detection limit in Bmagchare_Bmag? Uncertainty in Bmag (3)magfloatnullableVmagV-band magnitude (3)magfloatn_Vmag[s] s for 2{sigma} detection limit in Vmagchare_Vmag? Uncertainty in Vmag (3)magfloatnullableRmag? Cousins R-band magnitude (3)magfloatnullablen_Rmag[s] s for 2{sigma} detection limit in Rmagchare_Rmag? Uncertainty in Rmag (3)magfloatnullableIcmagCousins I-band magnitude (3)magfloatn_Icmag[s] s for 2{sigma} detection limit in Icmagchare_IcmagUncertainty in Icmag (3)magfloatz'magz'-band magnitude (3)magfloatn_z'mag[s] s for 2{sigma} detection limit in z'magchare_z'mag? Uncertainty in z'mag (3)magfloatnullableHmag? H-band magnitude (3)magfloatnullablen_Hmag[s] s for 2{sigma} detection limit in Hmagchare_Hmag? Uncertainty in Hmag (3)magfloatnullableKsmagKs-band magnitude (3)magfloatn_Ksmag[s] s for 2{sigma} detection limit in Ksmagchare_Ksmag? Uncertainty in Ksmag (3)magfloatnullableJ/AJ/127/2455/table5Spectral Features and ClassificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGDDSGDDS object identification (HH-NNNN)charAGN[0/1] Indicative of AGN activity (1)int[OII][0/2] Is [O II] (3727 {AA}) present? (1)int[OIII][0/2] Is [O III] (5007 {AA}) present? (1)intHiBal[0/2] Are Balmer lines bluer than H{beta} present? (1)intLoBal[0/2] Is H{alpha} and/or H{beta} present? (1)intFe2375[0/2] Is Fe II (2375 {AA}) present? (1)intFe2600[0/2] Is Fe II (2600 {AA}) present? (1)intMg2800[0/2] Is Mg II (2800 {AA}) present? (1)intMg2852[0/2] Is Mg II (2852 {AA}) present? (1)intHandK[0/2] Are Ca II H & K lines present? (1)intBalmer[0/2] Is the Balmer decrement present? (1)intD4000[0/2] Is the D4000 feature present? (1)intTempRedshift template code (2)intClassSpectral class (3)intConfConfidence code (G1)intzRedshiftfloat